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PostPosted: Apr 2nd, '20, 07:40 
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:wave1: This is my most recent build. It's my Quarentine system...and it's still a work in progress.
I have two of these tubs. One isn't usable right now.

I ended up getting an amazing deal on the 2 inch foam that I insulated the tank with through craigslist. this is actually excess from another project. It is further buried about 17 inches in the ground. Right now it has a 4x8 foot bed, about a foot deep.

The media is a mix of about 50% expanded clay, 40% perlite, and 10% scoria or black lava rock.

I'd like to eventually add the other tank, with another bed above it, only less buried, so it could be constant height, with this one as a fluctuating sump.

The pump is running continuously, and it is currently flood and drain with a bell siphon.


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If you give a man a fish, he can make an AP system.

Barrel System
IBC System
300 gallon flood and drain system
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PostPosted: Apr 3rd, '20, 12:41 
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Joined: Sep 29th, '06, 08:32
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Great sump tank. Is the top growbed ply with liner?


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PostPosted: Apr 4th, '20, 02:11 
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Hey Asitis,
I love these tanks. I have another one just like it, but I'm trying to sort out a few things with it. I'd like this finished one to be the sump, and If I can get my hands on a taller tank, I'd Like to go CHOP. I have an idea (probably already done) to do a modified CHOP system with two of the blue tanks.

The idea is to have this one in the ground, the other about a foot higher, so it keeps constant height, flows into some kind of filtration box, then into the sump, where water would be pumped to the grow beds. Thinking of keeping the GB over the CH fish tank at constant flood, so the tank would be constantly having movement and increased aeration.
Once cycled, I'm thinking of using the current tank as a FT for now.

The growbed is two stacked layers of 2x8, and 2x6 timbers. The bottom is 3/4" plywood.

The liner is Duraskrim reinforced liner made here in California. It is pretty durable stuff, and the it has reinforcement, so if it gets a hole, it can't spread. I actually took a very sharp craggy piece of scoria/lava, and tried very hard to puncture the liner. It wasn't easy. So, I am definitely satisfied with it.

It is pricey, but I have bought nearly everything for my systems secondhand, or picked it up for free. I got an almost full roll for a ridiculously good price on Craigslist, which I'm not sure if you have out there, but I think the equivalent is Gumtree.

The only major things that I have had to buy new at full price were some of the pipes, the perlite gravel, and my pumps.

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If you give a man a fish, he can make an AP system.

Barrel System
IBC System
300 gallon flood and drain system


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